Acetaminophen (Tylenol) overdose is a severe risk (causing acute liver failure) because it’s hidden in over 600 cold/pain products. Never mix medications containing it, and stay below the 3g/24hr limit. If overdose is suspected, seek emergency medical care immediately, as early treatment (NAC) is critical.

Cluster headaches are a rare but severely painful neurological condition, characterized by intense, burning attacks that occur in cyclical patterns. Often striking like "clockwork" at night, they cause one-sided eye pain, restlessness, and autonomic symptoms. While their cause is unknown, effective treatments like oxygen therapy and prescription injections can provide life-changing relief.